How To Adjust The Agc; How To Adjust The Rcg - Simrad SX90 - REFERENCE MANUAL REV D Reference Manual

Simrad SX90
38
Click the left or right side of the
increase the gain, or the middle of the button to open the
parameter dialog.
For more information about this parameter, see About Gain on
page 185.

How to adjust the AGC

The (Automatic Gain Control) adjusts the gain in the sonar
AGC
preamplifier circuitry. This gain depends on the strength of the
incoming echo signal. The result is a filter effect, reducing noise
and reverberation. The
Procedure
1 Click the
Horizontal
menu.
2 Click the button to adjust the parameter.
AGC
Click the left or right side of the
or increase the setting, or the middle of the button to open
the parameter dialog.
For more information about this parameter, see What is AGC?
on page 184.

How to adjust the RCG

The (Reverberation Controlled Gain) regulates the receiver
RCG
gain individually for each of the receiving beams. If you select
Weak and Medium, echoes from propellers, surface and bottom
reverberations will be suppressed, while target echoes will
remain in view. If you select Strong, a special filter removes the
bottom, while echoes on the bottom will be presented.
Note
Scattered fish can be perceived as reverberation. The RCG
function must therefore be used with care if you wish to find
scattered schools.
Procedure
1 Click the
Horizontal
menu.
2 Click the button to adjust the parameter.
RCG
button to decrease or
Gain
has four different settings.
AGC
or tab to open the respective
Vertical
button to decrease
AGC
or tab to open the respective
Vertical
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